Yet, MCR Codes only consider the Minimum Storage point and assume that all transfers are equal without proving it (i.e., β = β (cid:48) ); and MFR codes are not optimal when repairing more than one failure.

The idea behind regenerating codes is that, when compared to erasure correcting codes, more devices are contacted upon repair but much less data is downloaded from them thus offering low repair cost for each single failure.